Method of and device for ensuring the proper order of threads isolated from a sheet of warp threads



I Sept. 16, 1952 s. s. c. FLEISCH'ER 2,610,332

METHOD OF AND DEVICE FOR ENSURING THE PROPER ORDER 0F THREADS ISOLATED FROM A SHEET OF WARP THREADS Filed July 10, 1947 m 7 I 65 67 m "1.," h. 69 6;

757679 IHVEHTOK: 82 78 77 five/105164120 CHR/sT/EFLE/scHaz A t forney Patented Sept. 16, 1952 METHOD OF AND DEVICE FOR ENSURING THE PROPER ORDER OF THREADS ISO- LATED FROM A SHEET OF WARP THREADS Svend Sigurd Christie Fleischer,

Charlottenlund, Denmark.

Application July 10,1947, Serial No. 760,000 In Denmark February 28, 1940 Section 1, Public Law 690, August 8, 1946 Patent expires February 28, 1960 5 Claims.

In looms employed in the textile industry the warp threads are wound upon a warp beam, from which they are taken off in the form of a sheet or layer of threads that constitutes the warp. In this sheet of threads the single threads lie side by side, and during the operation of the loom they are carried through the implements of the loom, viz. the heddles and the reeds.

It is most important that the warp threads lie parallel to each other, and that they lie in the proper order, because any threads crossing each other in the warp will give occasion to breakage and to faults in the woven material.

When a warp is almost used up, each thread therein may be tied to another thread in a new warp, whereupon the weaving may proceed. In order to carry out this tying together of the warp threads,the ends of the threads in the old warp and in the new warp are held in a pair of clamps disposed across the entire width of the warps. The threads of the new warp must likewise lie parallel to each other, and where variously colcred threads are employed it is necessary that these colored threads lie in their proper predetermined order. The two thus clamped warps are disposed one above the other, and the tying together of the threads takes place in the part of the threads that is disposed between the two clamps.

When the warp threads are to be conveyed to the loom and are carried through the heddles and reeds, or when the threads of an old warp are to be tied together with the threads of a new warp, each thread hasfirst to be isolated from the sheet of threads in order to allow its individual treatment.

For conveying a warp to a loom there is employed a so-called reacher-in machine by means of which the threads are isolated, and each thus isolated thread is threaded through the eye of a heddle by hand, or there may be employed a so-called drawing-in machine by means of which the thread is isolated from the sheet of threads and thereupon automatically threaded through the eyes of the heddles. For tying together the thread ends there is employed a warp tying machine, which has members for isolating the threads of the two warps, and other means for tying the ends of the threads of these two warps together.

As indicated each of the machines mentioned is able to isolate the threads, but none of them is able to ensure the proper order of the threads in the sheet of threads unless special means for this purpose are supplied.

To ensure the proper order of the threads in a sheet ofwarp threads it has been proposed to insert across the warp a pair of cross beams or cross cords over and under which the threads I are alternately carried to the effect that two ad- 2 1 r jacent threads form a cross between the two cross members. In this case the machines mentioned above, viz. the reacher-in machine, the drawing-in machine and the warp tying machine, are provided with a cross lifter, i. e. a device for isolating the threads from the said crosses and thereby ensure that this isolation takes place in the same order in which the threads are crossed. It is thus evident that the most advantageous and certain operation of any of the machines mentioned as well as a faultless weaving is obtained'when the threads are crossed in the manner described. This is of the greatest importance when a material of a certain pattern or variously colored is being woven.

The above described known method in connection with a reacher-in machine, a drawingin machine or a warp tying machine of conventional type is, however, subjected to the inconvenience that during the operation of the loom, the threads are drawn or cut out of their cross, and the cross is thus lost, because the thread isolating members are not constructed in such a manner that the isolated thread may pass by them. When thereafter the treatment of the sheet of threads by the said machines is repeated, it is necessary to isolate the threads without their being crossed, unless the sheet of threads is either provided with other crosses, or such other crosses can be provided. Such a possibility is, however, not present except in exceptional cases, and at all events it is impossible to avoid faults arising in the proper order of the threads.

The object of the present invention is to provide means for eliminating this inconvenience and to secure the possibility of ensuring the correct order of the threads that are isolated-fromthe sheet of threads by means of a machine for conveying Warp threads to a loom, as for instance a reacher-in machine, a drawing-in machine or a warp tying machine, and this is mainly accomplished by conveying the threads from the said machines in a crossed condition between the cross members, f

In cases where the threads are crossed prior to their isolation, the, new cross is according to the invention disposed in such manner that it is not lost during the isolationprocess, by which is understood that it must be possible to place the new cross between the thread isolating members or the tying membersand the implements of the loom or the warp beam, or in case the threads are not crossed previously to their treatment, the said machines must be provided with means from crossing the threads and for placing the cross in the position mentioned. Furthermore the thread isolating members should across the sheet of threads they allow the isolated threads, which prior .to the isolation lay in front of the isolating members, to pass by them without loss of the cross, and so that the threads after,

the isolation lie behind the isolating members. It is advisable that each thread while being isolated from the thread sheet directlyor indirectly guides the members that lay them in cross so that the cross laying members cannot fall out of step with the thread isolating members.

machines mentioned, will always leave the machine in a crossed position, and the proper order of the threads will always be maintained; likewise in case of a repetition of the treatment of the sheet of threads by the machine in question.

In the accompanyingdrawing means for carrying'out the invention practically are illustrated schematically, and to avoid obscurity, all parts of the loom not necessary for an understanding of the invention are eliminated from the drawing. Thus Figs. 1 and 2 give a schematic view of examples. as to how the crosses in a warp may be placed. in relation to a warp tying machine and a reacher-in machine respectively, and to the implements or the loom or to the warp beam.

Figs. 3 and 4 show a manner of construction in perspective view of a thread isolating device, and

Fig. 5 is a perspective View of a cross laying device and its position in relation to a warp tying machine. I

With particular reference toFig. 1, the heddles of a loom are indicated by I, and the reeds by 2. A warp 3 is placed in theloom, and each thread of this warp is threaded through the eye 4 of a heddle I'. As illustrated, the warp is assumed to almost be used up, and the remaining portion is clamped between clamps 5 and 6. The free end of a new warp I that is wound upon a beam 8 is clamped between other clamps 9 and I0, disposed opposite the clamps 5 and. 6.; Between the clamps 5 and 9 and the clamps 6 and [9 there is a warp tying machine H by means of which the ends of the threads in the two warps may be tied together. The warp tying machine. is mounted on wheels [2 that run on a support l3 for displacing the machine between the edges of the warps. The position of the tying and cutting members of the warp tying machine is indicated by a hatched portion M- in Fig. l. The threads of each. warp are relatively crossed over cross members. I5 and IE respectively. The crosses I! and [8 thus formed are in conventional manner placed between the tying and cutting members 14, and the clamps 6 and lb, or between the free ends [9 and 2%] respectively of the two warps. In this manner the endsof the warp threads projecting beyond the tying and cutting members M are severed, and there is thus provided room for. moving the cross lifter in the warp tying machine forwards while the isolation of the warp threads proceeds, but in this manner the crosses are cut away. However, thewarp threads are again laid in crosses, because-after or simultaneously with. the tying together of the threads they are delivered from the warp tying machine, or from cross laying or thread isolating members 2| and 22 associated therewith, provided with new crosses 23 and 24, which crosses are disposed between the tying and cutting. members I4 and the heddles I or the warp beam 8.

In Fig. l the warps 3 .and I are both provided with crosses, but if it is considered of advantage, only-one of the warps need have a cross. Thus for instance the warp 3 may prior to the treatment of the warp threads be provided with the cross I? while the warp I has no cross, and after the tying of the threads has taken place, the warp Tmay for instance be provided with the cross 23, while the warp 3 is not crossed.

. A warp tying machine is a combination of two thread isolating members or a cross lifter, a tying mechanism and the necessary operating mechanism and control devices, and in consequence thereof the sheet of threads treated by means of a reacher-in machine or a drawing-in machine may in a corresponding manner be laid in crosses with the crosses disposed between the machine, or its tying and cutting members, and the heddles or the warp beam, irrespective of whether the sheet'of threads, prior to treatment, have been crossed or not.

In Fig. 2 there is shown an example of a reacher-in machine in. connection with a warp 2,5, which isheld between two clamps 26 and 21, while the main portion of the warp is wound on the beam 28. The threads of the warp are laid in crosses by means of cross members 29. The crosses thus formed are in known manner placed opposite the reacher-in machine 3| in such a manner, that the thread isolating member 32 of this machine is able to isolate each threadin the warp from the cross. The thread isolating member 32. is illustrated in the position after isolation. of a thread 33, the end 34 of which has been pulled out of the clamp 21 during the isolation, the tension of this clamp being not greater than the strength of the thread, the latter may be easily pulled out of the clamp. After being isolated, the thread is threaded. through the eye 4 of the heddle I, butthis results in the thread being drawn out of. its cross 38. In the same manner the next thread .35 is drawn out of its cross when isolated and threaded through the eye 4 of the heddle I. Accordingly the cross 30 that was present, in the warp prior to the treat ment of the threads is entirely lost. However, the threads of the warp are again laid in a cross, because after treatment or simultaneously herewith the threads arev delivered from the reacher-in'machine, or from the cross laying or thread isolating members 36 associated herewith, in a crossed position between cross members 37 disposed between the isolating member 32 and the heddle l or the warp beam 28.

In Fig. 3 there is shown a thread isolating device in which there is employed two prehensile members, each comprising a rod 459 and 5!) respectively, provided with a forked end 5! and 52 respectively. The prehensile members are placed at either side of the sheet of threads 53, and by means of suitable actuating members, the rods 49 and 50 areconnected to operating parts of the machine for conveying warp threads to a loom as for instance a warp tying machine, a reacher-in machine or a drawing-in machine. These connections are so arranged that the prehensile members are subjected to an intermittent rocking motion in relatively opposite directions towards the cross members 54 and 55 to the effect that these cross members are alternately pressed in relative opposite directions out of the plane of the sheet of threads. Thus the rod 49 with its forked end 5! oscillates upward in Fig. 3 and raises the cross member 55, while the rod 50 with its forked end 52 oscillates downward in Fig. 3 and presses the cross member 55 down, and in this manner the thread indicated by 55 is isolated and is subsequently carried forward past next thread in the thread sheet, whichthread is subsequently carried forward by the thread swipeil in the manner described.

Instead of employing two prehensile members as described above for moving the'cross members out of the plane of the sheet of threads, a single member may suflice as indicated in Fig. 4 of the drawings. Here there is employed only one prehensile member comprising a thread isolatin member or rod 58 with a forked end 59. The rod is by means later described connected to operative parts of the warp thread conveying machine employed, in such a manner that it alternately presses one of the cross members at a time out of the plane of the sheet of threads. The member 58, 59' is oscillated intermittently from the one to the other of the cross members 54 and 55. When oscillated to the right in Fig. 4, the prehensile member presses the cross member 55 downwards, so that part of the thread 68 over the depressed portion of the cross member is isolated therefrom. The thread swipe '51, which is preferably arranged at the same side of the sheet of threads as the prehensle member 58, 59, but which may if desired be arranged at the opposite side thereof, is actuated to movement parallel to the cross members 54 and 55, and during this movement presses the thread 68 slightly downward to isolate it from the other cross member 54, whereupon the thread is carried forward past the prehensile member.

In a modified manner of construction the prehensile member may be so arranged that while pressing the one cross member out of the plane of the: sheet of threads, it is subjected to an actuation that moves it forward towards the next thread in the sheet of threads, thereby counteracting any tendency of the thread swipe to simultaneously carry this thread forward.

One manner of construction of the means to isolate the prehensile member 49, 58 and 58 and means to move the thread swipe 51, is shown in Fig. 4.

The rod 58 is attached to a part 98 that is pivotally attached to a pin 9I in a fork formed in the one end of a member 92, which in turn is pivotally mounted on a pin 93 rigidly attached to a slide 94. This slide is displaceable longitudinally in a stationary guide 96 by means of a drawrod 9! attached to a driving mechanism not included in they drawing, The other end of member 92 is likewise forked to engage a rod 98 pivotally attached thereto by means of a pin 99. The rod 98 may be connected to a driving mechanism not included in the drawing. Furthermore, part 98 has an inclined finger I88 that lies on an abutment I8I rigidly attached to the stationary guide 96 and subjected to the action of a spring I82 on member 92.

The thread swipe 51 is attached to a pin I85 rigidly attached to the one end of an arm I86, the other end of which arm is connected to a cam mechanism I81 operated by means of a rotating shaft I88, which is connected to a driving mechanism not included in the drawing. The arm I86 has on its lower side a bevelled surface I89 that abuts a pin II8 rigidly attached to a stationary 6 member III. Between a pin II2 on the cam mechanism I81, I86 and a pin I I3 on the stationary part III, a draw-spring H4 is inserted to force the inclined surface I89 against the pin H8 with a suitable pressure.

When by means of rod 91 the slide 94 is displaced towards the edge of the thread layer, rod 58 willby means of finger I88 and abutment I8I be raised from the cross member 55, and by means of rod 98 the member 92 will swing in such a manner that rod 58 is moved above the crossmember 54. When after this slide 94 by means of rod 91 is displaced away from the edge of the thread layer, the finger I88 is moved away from the abutment I8I so that spring finger I82 will press rod 58 with its fork 59 against the cross member 54 and press this member downwards, so that the next thread in the thread layer will thus be released from the cross member 54. When the cam mechanism I81 displaces arm I86 towards the edge of the thread layer,

arm I86 and with it the thread swipe, will on ac-' count of the sliding motion of the inclined surface I89 against-pin II8, be raised andmoved away from the threads of the thread layer, and when the cam mechanism I8I thereupon displaces arm I86 away from the edge of the thread layer, the inclined surface I89 is released from pin H8, and arm I86 with the thread swipe will be forced downwards by means of spring II4 so that the thread swipe may engage the edge-thread of the thread layer and carry it away from the thread layer.

The operating mechanism for operating the rods 9! and 98 as well as shaft I88 are arranged to move the said members in time with each other that the said movements take place in proper sequence.

When arranged in correct manner the above described isolating devices may be coupled to and operate the rods 49 and 58 as well as the thread swipe 5! as shown in Fig. 3.

Cross laying devices cooperating with the warp thread conveying machines for delivering the threads in a crossed condition and with the cross disposed between the said machine and the implements of the loom or of the beam, may be constructed in various manners without therefore deviating from the principles described. An example hereof is shown in Fig. 5, where the warp thread conveying machine is a warp tying machine 64, for instance of the kind described in the specification of United States Patent No. 2,039,157. The position of the cutting and tying members are indicated by means of the hatched portion 65. To avoid confusion the thread isolating members are removed from the figure.

Theoriginal sheet of warp threads 66 is held in a clamp 61, and the end of the new sheet of warp threads 68 is held in a clamp 69, the remainder of this warp being wound on a beam 18. When the warp tying machine has isolated the threads from the sheet of threads and tied them in knots II, the thus tied threads are laid over abar or cord I2. The cross laying members comprise two cross member fingers I3 and I4 that are attached to arms I5 and I6 respectively, which arms are mounted to rock on a fixed pin I1, and are actuated to intermittent motion by means of cam members I8 and I9 on a shaft 88 operated to rotation by the warp thread conveying machine.- The arms I5 and I6 may either be connected to the cam members I8 and I9, or they may cooperate with them by their weight, or by means of spring actuation abut the cams with a ,2, suitable pressure, while the cross member finger l3 and M at the same time are guided in a suitable manner.

Upon rotation of the shaft 8%, the cam members l8 and is will subjeotalternately the cross member 73 and the cross member 14 to a rocking motion to the effect that these cross members alternately engage the threads that are delivered by the warp tying machine 64. ihe threads will thus, lie alternately over and under the cross members so that two adjacent threads will be relatively crossed.- The tied ends 66a and 680: are crossed and laid over the bar or cord l2, while the threads 66b and 5% are shown in the position in which they are engaged by the cross member finger E4. The cross members have ex tensions in the form of cords BI and 82. When the cross member fingers are filled with threads, the machine is stopped and the cross member fingers released from the arms '55 and i6, and I together with the cords SI and 82 they are drawn through the threadlayer till the cross members are free hereof and may again be attached to the arms 15 and'fit, whereupon the tying may proceed. Instead of the cross members l3 and M and the operating means associated herewith there may be employed metal strips that are clamped over the entire width of the sheet of threads, and which are moved forwards and backwards so that the ends of the two metal strips alternately engage the threads when they are delivered from the machine.

To prevent the occurence of faults in the proper order of the threads in case the thread isolating members of the machine now and then should'iail and not engage a thread, the movement of the cross laying members are directly or indirectly guided by the isolated threads, for instance in such a manner that the operating means of the cross laying members are operated through such movable parts in the machine that are only actuated whenever the thread isolating member has engaged a thread, by which the said members will not get out of step with the said machine.

The above mentioned sheets of threads that are treated by means of a reacher-in machine, a drawing-in machine and a warp tying machine, whether or not the sheet of threads prior to treatmenthas been provided with a cross, will thus be delivered from the machine in question in a crossed condition and with the cross placed between the thread isolating device, or the tying and cutting members of the said machine, and

the implements of the loom or the warp beam,

so that the sheet of threads is still provided with a cross that may be utilized during the subsequent treatment of the sheet of threads.

I declare that what I claim is:

1. A thread isolating device for ensuring the proper order of threads isolated from a sheet of warp threads that are crossed over pliable crossmembers, comprising pliable cross members for holding warp threads crossed, at least one thread isolating member disposed outside of the sheet of threads and so constructed and arranged as to draw a portion of one of the pliable cross members out of the plane of the sheet of threads to isolate said one thread, means for in termittently operating the said thread isolating member, a thread swipe, and means for operating the thread swipe to carry the isolated thread forward past the thread isolating member.

2. A thread isolating device for ensuring the proper order of threads isolated. from a sheet of:

8. warp threads, comprising pliable cross members over which the threads are crossed, prehensile members disposed outside the sheet of threads at each side thereof, means for actuating them intermittently to movement in relative opposite directions towards the pliable cross members, hooks formed on the free ends of the prehensile members'for engaging one of thepliable cross members and move it out of the plane of the sheets of threads, a thread swipe, and means for operating the threadswipe to carry the isolated thread forward past'the prehensile members.

3. Athread isolating device for ensuring the proper order of threads isolated froma sheet of warp threads, comprising pliable cross members over which the'threads are crossed, a prehensile memberarranged outside of one side of the sheet of threads, means -for actuating it to intermittent movement towards one of the cross members, a hook formed on the end of the prehensile member for engaging one of the pliable cross members and-movingit out of the plane of the sheet of threads, a thread swipe, means for operating the thread swipe in such a manner that it both assists in isolating the thread and carries the isolated thread forward past the thread isolating device.

4. 'A thread isolating device for ensuring the proper order of threads isolated from a sheet of warp threads, comprising pliable cross members over which the threads are crossed, prehensile members disposed outside the sheet of threads at each sde thereof, meansfor actuating said prehensile membersintermittently .to movement in relative opposite directions towards the pliable cross members, said actuating means also causing longitudinal displacement of the prehensile member towards the next thread in the sheet of threads, hooks formed on the free ends of the prehensile'members for engaging one of the cross members and move it out of the plane of the sheet of threads, a thread swipe, and means for operating the thread swipe to=carry the isolated threadforward past the prehensile members.

5. A thread isolating device for ensuring the proper order of the threads isolated from a sheet of warp threads in a loom, pliable cross members disposed between a conventional machine for conveying warp threads to the loom and the implements of the loom, isolating members carried by the said machine and disposed outside the sheet of threads for drawing portions or" the pliable members out of the plane of the sheet of threads to isolate one thread thereof, means ac-- tuated throughthe operation of the machine for intermittently operating the said isolating device, a thread swipe, and means for operating the thread swipeito carry the isolated thread forward past the thread isolating device.

SVEND'SIGURD CHRISTIE FnEIscnER. 7

REFERENCES CITED? The following references-are of record in the file of this patent:

UNITED STATES PATENTS 

